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以实验室实验为研究手段,研究了单向、径向和球向3种不同流场条件下的瓦斯解吸规律。首先对实验进行了设计,包括实验原理、不同流场设计,并对现有吸附罐进行设计改造,实现了单向、径向及球向3种瓦斯流场状态;然后对实验装置进行加工与制作,开展了不同流场条件下的煤样瓦斯解吸实验,绘制出相应的瓦斯解吸量曲线。研究结果表明:在相同的瓦斯解吸时间内,3种流场的瓦斯解吸量与平均瓦斯解吸速度不同,且都呈现出球向流场最大,径向流场次之,单向流场最小的规律,对煤矿瓦斯防治工作具有指导意义。
Taking laboratory experiments as a research method, the gas desorption law under three different flow fields of unidirectional, radial and spherical directions was studied. First, the experiment was designed, including experimental principle, different flow field design, and the existing adsorption tank design and transformation, to achieve a unidirectional, radial and ballistic three gas flow field state; and then experimental device processing and Production, carried out under different flow conditions of coal gas desorption experiments, draw the corresponding gas desorption curve. The results show that the gas desorption rates and average gas desorption velocities of the three kinds of flow fields are different during the same gas desorption time, and both show the largest flow field, the second flow field and the unidirectional flow field The law is of guiding significance to coal mine gas prevention and control work.